Chemical genomics reveals inhibition of breast cancer lung metastasis by Ponatinib via c-Jun
Wei Shao , Shasha Li , Lu Li , Kequan Lin , Xinhong Liu , Haiyan Wang , Huili Wang , Dong Wang
Protein Cell ›› 2019, Vol. 10 ›› Issue (3) : 161 -177.
Chemical genomics reveals inhibition of breast cancer lung metastasis by Ponatinib via c-Jun
Metastasis is the leading cause of human cancer deaths. Unfortunately, no approved drugs are available for antimetastatic treatment. In our study, high-throughput sequencing-based high-throughput screening (HTS2) and a breast cancer lung metastasis (BCLM)-associated gene signature were combined to discover anti-metastatic drugs. After screening of thousands of compounds, we identified Ponatinib as a BCLM inhibitor. Ponatinib significantly inhibited the migration and mammosphere formation of breast cancer cells in vitro and blocked BCLM in multiple mouse models. Mechanistically, Ponatinib represses the expression of BCLM-associated genes mainly through the ERK/c-Jun signaling pathway by inhibiting the transcription of JUN and accelerating the degradation of c-Jun protein. Notably, JUN expression levels were positively correlated with BCLM-associated gene expression and lung metastases in breast cancer patients. Collectively, we established a novel approach for the discovery of anti-metastatic drugs, identified Ponatinib as a new drug to inhibit BCLM and revealed c-Jun as a crucial factor and potential drug target for BCLM. Our study may facilitate the therapeutic treatment of BCLM as well as other metastases.
anti-metastatic drug discovery / gene expression signature / high-throughput sequencing-based high-throughput screening / Ponatinib / breast cancer lung metastasis / c-Jun
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The Author(s) 2018
Supplementary files
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